Thank you for the other responses.
I have consulted the VP owners manual for my engine, here is what it says:
"You may tilt the drive unit to reduce the draft for shallow water running as long as you do not exceed 1000 RPM."
There are warnings as well stated in the manual that say damage can occur if run at higher than 1000 RPM.
I am pretty confident I did not exceed this RPM, I was only putting it into gear to maintain control of the boat when necessary to stay in line for the boat launch.
Glad to hear that the warm water I felt may be something designed into the exhaust bellow.
I'll be dropping it in the water (AT A DIFFERENT LAKE!!!) this week some night after work to retest, and to ease my mind.
We have been told the launch at this particular lake was shallow, but man, I had no idea it was even possible to be this shallow, especially at a spot on the lake where boat traffic is heavy (launching and retrieving). Probably won't be visiting this lake again any time soon, too stressful. There were several other boats in the area at the same time, some smaller, some larger, so I am confident that it is possible to safely launch and retrieve from here, but my GF and I dont need the additional stress, we just want to enjoy a couple drinks on the water

Thanks again.
Steve